Is it because I’m low on vitamin D?

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So I’m really low on vitamin d according to my doctor. My period was always regular but since march it has been irregular🥲 I get it every 2 weeks. Gynecologist already checked my hormones and everything looked fine. I’ve been doing research and seen that low levels of vitamin d can affect your period. How true is this? And has it happened to anyone?😭 I feel like I have no answers.🙃